ScienceAugust 15, 2026

noncommutative

non-kuhm-PYOO-tuh-tiv

Definition

Describing a system or operation where the order in which elements are combined or measured changes the outcome.

Etymology

Derived from the Latin 'non-' (not) and 'commutare' (to exchange or change). It entered mathematical and scientific discourse to describe operations, such as matrix multiplication, where changing the sequence of variables produces a different result.

In the news

In this article, noncommutativity refers to theoretical modifications in quantum mechanics where position and momentum operators do not commute, leading to measurable shifts in a crystal's thermodynamic properties.

Thermodynamic Effects Emerge In Snyder-de Sitter Einstein Crystals

Read the full article ↗

Quantum Zeitgeist

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